DS/CDMA adaptive interference canceller on differential detection in fast fading channel. - Shousei Yoshida; Akihisa Ushirokawa; Shuzo Yanagi; Yukitsuna Furuya (VTC, 1994)

Performance evaluation of CDMA adaptive interference canceller with RAKE structure using developed testbed in multiuser and multipath fading environment. - Hironori Mizuguchi; Shousei Yoshida; Akihisa Ushirokawa (PIMRC, 1998)

SSDT-site selection diversity transmission power control for CDMA forward link. - Hiroshi Furukawa; Kojiro Harnage; Akihisa Ushirokawa (IEEE J. Sel. Areas Commun., 2000)

Space-time iterative and multistage receiver structures for CDMA mobile communication systems. - Slavica Marinkovic; Branka Vucetic; Akihisa Ushirokawa (IEEE J. Sel. Areas Commun., 2001)

Likelihood Function for QRM-MLD Suitable for Soft-Decision Turbo Decoding and Its Performance for OFCDM MIMO Multiplexing in Multipath Fading Channel. - Hiroyuki Kawai; Kenichi Higuchi; Noriyuki Maeda; Mamoru Sawahashi; Takumi Ito; Yoshikazu Kakura; Akihisa Ushirokawa; Hiroyuki Seki (IEICE Trans. Commun., 2005)